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Old April 23rd 17, 12:10 PM posted to rec.radio.amateur.antenna
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Default Antenna for Marine VHF

On Sat, 22 Apr 2017 20:03:49 -0700, Jeff Liebermann
wrote:


Conservative radio range on VHF is:
Nautical_Miles = 1.225 * sqrt(antenna_ht_feet)
Statute_Miles = 1.415 * sqrt(antenna_ht_feet)
km = 4.124 * sqrt(antenna_ht_feet)


Something is wrong with the km line above. Perhaps the antenna height
should be in meters? Or, the constant should be 2.278.
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Old April 23rd 17, 06:49 PM posted to rec.radio.amateur.antenna
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Default Antenna for Marine VHF

On Sun, 23 Apr 2017 07:10:17 -0400, Pat wrote:

On Sat, 22 Apr 2017 20:03:49 -0700, Jeff Liebermann
wrote:


Conservative radio range on VHF is:
Nautical_Miles = 1.225 * sqrt(antenna_ht_feet)
Statute_Miles = 1.415 * sqrt(antenna_ht_feet)
km = 4.124 * sqrt(antenna_ht_feet)


Something is wrong with the km line above. Perhaps the antenna height
should be in meters? Or, the constant should be 2.278.


Oops and thanks. That should be:

Conservative radio range on VHF is:
Nautical_Miles = 1.225 * sqrt(antenna_ht_feet)
Statute_Miles = 1.415 * sqrt(antenna_ht_feet)
km = 4.124 * sqrt(antenna_ht_meters)
--
Jeff Liebermann
150 Felker St #D
http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
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